Vestibule-car door and trap



Jan. 18, 1927. 1,614,686

R. N. PATTERSON H AL VESTIBULE CAR noon AND TRAP Filed March 18, 1925 lIlIl/IIX/Illll/Ill/l/[lllI/II Patented Jan. 18, 1927.

UNITED STATES.

PATENT orrica.

RALPH NORMAN PATTERSON AND ALFRED GRAVE FELL, or MONTREAL, QUEBEC,CANADA, ASSIGNORS'OF QNE-FIFTHTO JEROME BONAPARTE BELL, or MONTREAL,-

CANADA.

vEsT-IBULE cAR noon" AND TRAP.

Application filed march 18, 1925.

The invention relates to a car vestibule door and trap, as described inthe present specification and illustrated in the accompanying drawingsthat form partof the same.

The invention consists ementially of the novel featuresofrcons'tructio'n pointed out broadly and specifically in the claims fornovelty following"a description containing an explanation in detail ofan acceptable form of the invention. a

The objects of the invention are to safeguard the lives of passengers inraihway passenger cars by avoiding "the accidents due to the negligenceof attendants in failing' to close the trap doors cover'in'g'the openspaces over the steps following the closing of the vestibule door; toinsure the efficient operation of the trap and vestibule doorcoincidently in opening and closing movements to' release the'door fromthe trap for the use of the latter at elevated platforms; toautomatically lock the vestibule door at each operation of the door andtrap together in their closing movement; tosinrplify the constructionand'pr'oducethis car specially at a moderate cost to the railwayf-andgenerally to provide a reliable and serviceable device to'accomplish theaforesaid purposes.

In the drawings, Figure 1 is a' perspective view of the car end atones'ide, showing the vestibule door and attached trap.

Figure is an enlarged perspective of the parts tothis invention, the endwall of the car body being broken away.

Figure is an underneath plan view of the trap, showing the vestibuledoor in section.

Figure l in an enlarged detail of the detachable liingedjoi'nt fromvestibule door to the trap.

Figure 5 is an enlarged detail of the trap spring lock.

Figure 6 is an enlarged sectional View of lock and casing secured to thetrap part.

Like numerals of reference indicate corre sponding parts in the variousfigures.

Referring to the drawings, the trap door in split diagonally into thehalves 10 and 11 and these halves are secured together by the hinges12-, which permit the halves to fold upwardly. The trap part 11 issecured to the end wall 13 of the car by the hinges 14 Serial No. 16,448.

and folds upwardly against said oar- Wall '13 bringing along with it thepart 10 fastened thereto by hinges as aforesaid.

The part 10 is secured to the door 15 adjacent to the outeredge of thelatter and at the extreme outside corner o-fsaid trap part 10 by thehinge 16 which-is formed of the plate 17 countersunk in and secured tothe door 15 and has the hinge barrel sections 18 projecting therefromand registering with the barrel sections-from the hinge leaf '19indicated by'the numeral 20, said barrels 18 andQO being connected bythe pin 21.

The leaf 19 is formed with the bevelled and finished end 22 and thelatch recess 23 into which the spring latches 24and 25 are introducedand heldto their outer positions by the spring 26 the. ends of thelatches being bevelled on their undersides 2,7 and The catches and areformed in the recess 31in the trap part 10 adjacent to the outer cornersaid catches 29 and30 may form part of a plate 31cou1iters11t1k inntllepart 1-0. The thumb lugs 32 and 33 have pinlendsxextendinginto the latchrecess and secured. tothe latches24. and 25, so that by pinchingthesethumb lugs against the pressure of'the spring 26 thelatches-are-released and the hingezdetached from the trap leaving thelatter free so that'the ipassenger may walk out of the .car, over saidtrap on to an elevated platform, as the vestibule door opens inwardlyover the trapand in opening the spring 'leaf acts as a door stop for theend is bevellednnd curved to for-ma runner which will in no way damagethe trap surface.

The'lock vcasing37 is obliquely split at .38 to form two sections 39 and40, the section l0 being secured to the underside of the part 10 at thefar corner from the door '15 and under the slot 41 and the section 39being secured to the part 11, said part having a slot 42 for a ring lug43 extending upwardly from the latch bolt 44 and having the ring 45pivotally secured and ordinarily flush with the surface of the trap, thelatter being slotted at 46 to receiie said ring.

The latch bolt 44 is bevelled at its front end 47 and is slidablyarranged in the casing 37 and is adapted to bridge the split between theparts 10 and 11 as Well as the split 38 of the casing 37 so that theflat 48 of the of the diagonal split.

latch bolt crosses the split 38 and turns said latch bolt into a'.locking bolt.

The latch bolt kl is reduced at its rear portion to form a centering pin49 sliding in the orifice 50 in the rear Wall 51 of the casing 37, thespring 52 encircling said centering pin between the shoulder 53 and therear Wall 51 of said casing.

The casing 37 is rigidly secured to the parts 10 and 11 in sections 40and 39 respectively and contains all the locking and opening mechanismfor both trap and vestibule door.

In the operation of this invention the usual conditions are the lowplatforms at the stations and the car steps necessary to reach them andunder these circumstances the trap remains permanently attached to thedoor 15 by the detachable hinge during the period of ordinarytravelling. To open the trap under such circumstances the ring isgrasped and the latch bolt slipped back against the spring pressure,thereby releasing the lock and coincidently raising the trap on the lineThis action pulls the door 15 to its open position and both trap anddoor fold to the open position against the end car Wall and disclose thesteps. At

very large centres there are elevated platdoor, as the closing of thetrap and vestibule door securely fastens the door as it cannot possiblybe opened from the outside, there by not only efi'ecting economy, butautomatically locking up the car and thus avoiding carelessness.

Another point that may be brought for- Ward in respect to this trap isthat there is an entire absence of vibration for on the one side it issecured to the car body, on the. other side to the door, and the twoparts are rigidly locked together.

What We claim is 1. In a vestibule door and trap, a diagonallysplitt-rap hinged to the car Wall and to said door and detachable fromthe latter,

said trap When the door is detached being adapted to form an exitplatform.

2. In a vestibule door and trap, a diago-- nally split trap having itsparts hinged together to fold upwardly and permanently hinged to the endcar Wall and a hinge having one part extending from the door and springheld to the other part secured to the trap.

3. In a vestibule door and trap, a diagonally split trap having itsparts hinged together to fold upwardly and permanently hinged to the endcar Wall and a hinge having a plate secured to the door and a leafprojecting therefrom and having spring held members cooperating Withmembers forming a part of the trap structure.

1. In a vestibule door and trap, a diagonally splittrap having its partshinged together to fold upwardly and permanently hinged to the end carwall, and a hinge having a plate secured to the door and a leafpivota'lly secured to said plate and contain ing a spring latchmechanisms and releasing members and cooperating With catchescountersunk in the trap.

5. In a vestibule door and trap, a diagonally split trap havingits partshinged together, tofold upwardly and permanently hinged to the end carWall, a hinge securing the trap to the door, and a ring countersunk inthe trap adjacent to the split at the tar corner from the door andadapted to loci: and release the trap and open the door.

6. In a vestibule door and trap, a diagonally split trap having itsparts hinged together to fold upwardly and pern'ianently hinged to theend car Wall, a hinge securing the trap to the door, and a latch boltspringheld and slidably arranged on the underside of the trap, andbridging the diagonal split of the corner and locking on the undersideand having an attached ring ordinarily countersunk in the trap andadapted to draw the locking bolt and lift the trap and open thevestibule door.

Signed at Montreal, Canada, this 8th day of January, 1925.

RALPH NORMAN PATTERSON.

ALFRED GRAVE FELL.

